US6336646B1 - Human powered vehicle with at least two wheels - Google Patents

Human powered vehicle with at least two wheels Download PDF

Info

Publication number
US6336646B1
US6336646B1 US09/485,905 US48590500A US6336646B1 US 6336646 B1 US6336646 B1 US 6336646B1 US 48590500 A US48590500 A US 48590500A US 6336646 B1 US6336646 B1 US 6336646B1
Authority
US
United States
Prior art keywords
frame
wheels
vehicle
crown
driving means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/485,905
Inventor
Giuseppe Bernardini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US6336646B1 publication Critical patent/US6336646B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/005—Recumbent-type bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot

Definitions

  • the present invention relates to a human propulsion vehicle with at least two wheels, as a bicycle, tricycle or the like.
  • Human propulsion vehicles as bicycles or the like are already known in the art, characterised in that they comprise a pedal drive system in which the energy from the legs is converted from a reciprocating into a circular motion by a so-called wheel and crank system.
  • Such wheel and crank system has a drawback in that, due to constructive and functional reasons, the crank is of a moderate size, i.e. during the reciprocating motion it has a reduced length equalling the leg swing. This entails a small torque value that can be driven to the wheel or crown.
  • object of the present invention is that of solving the drawbacks of the state of the art by providing a human propulsion vehicle with at least two wheels having a crank-wheel drive system suitable for converting the driving torque into higher values, so as to ensure higher values for the driving torque and reduced stress for the person with respect to the state of the art.
  • Another object of the present invention is to provide a human propulsion vehicle with at least two wheels whith a high efficiency crank-wheel driving system, of easy realisation, sturdy and, last but not least, of low cost.
  • the present invention provides a human propulsion vehicle with at least two wheels comprising a first frame, an handlebars rotatably mounted onto the first frame and connected with at least one wheel, a second frame integrally connected to the first frame at the front portion thereof and above to said handlebars, and resting means for the person,
  • the vehicle being characterised in that it further comprises first driving means suitable for realizing a swinging reciprocating motion around an axis of rotation and second driving means apted to convert the swinging reciprocating motion of said first driving means in a rotary motion around said axis of rotation, said first means and said second means being rotatably mounted onto said second frame.
  • FIG. 1 is a perspective view of the vehicle of the present invention.
  • FIG. 2 is an elevational side view of the vehicle of the present invention.
  • the vehicle of the present invention comprises a frame 1 to which a front fork 2 is hinged, the latter is rotatably connected to a front wheel 3 and connected at the upper end thereof to an handlebars 4 in the already known manner.
  • a rear wheel 5 is rotatably connected to the frame 1 in the already known manner is provided.
  • a seat 6 for the resting of the person on the frame 1 is provided.
  • a seat back 7 for the resting of the back region of the person is provided.
  • a second frame 8 is provided integrally connected to the first frame 1 .
  • the second frame 8 has, at the upper end thereof, a crown 9 rotatably mounted onto the frame 8 .
  • the crown 9 is in turn coaxially connected with a pair of cranks 10 , one on each side of the crown 9 . It is to be noted that the cranks 10 are remarkably longer than those of the state of the are.
  • connection of the cranks 10 with the crown 9 is of the freewheel or sprocket wheel type, so as to make the cranks 10 capable of performing a swinging reciprocating motion around the axis of rotation ( 100 ) of the crown 9 , and driving the torque to the crown 9 only in a direction of rotation thereof, and being freely rotatable in the opposite direction of rotation.
  • the crown 9 is connected with a chain or the like to a second crown 11 rotatably and centrally mounted onto the frame 1 at the lower part therof.
  • the crown 11 is in turn connected to the hub of the wheel 5 with a chain or the like in the already known manner.
  • a torque conversion by a suitable reduction gear can be provided.
  • a first advantage of the invention is that the combination of the members of the invention is such that to drive the rear wheel 5 with a driving torque that is markedly higher than the state of the art, thus remarkably decreasing the stress of the person at same driving energy.
  • a torque which is remarkably higher than that of the state of the art is applied to the crown 9 by choosing a suitably length of the cranks 10 .
  • Another advantage of the present invention derives from the fact that the person, once seated, can exert on the cranks 10 a thrust with his legs that is higher than the weight thereof, due to fact that the person when resting the back region thereof onto the seat back 7 , the latter provides a reaction member to the leg thrust.
  • a further advantage of the present invention derives from the fact that, when seated, the person has a lesser wind resistance than that of the similar vehicles of the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Handcart (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A human propulsion vehicle with at least two wheels (3, 5) comprising a first frame (1), handlebars (4) rotatably mounted onto the first frame (1) and connected to at least one wheel (3), a second frame (8) integrally connected to the first frame (1) at the front portion thereof and above said handlebars (4), and a seat (6) and a seat back (7) for the person is provided, the vehicle being characterized in that it further comprises a pair of cranks (10) for driving the propulsion energy with a swinging reciprocating motion around an axis of rotation (100), and a crown (9) connected thereto apted to convert the swinging reciprocating motion of the cranks (10) in a one-way rotary motion around said axis of rotation (100) and the seat back (7) being apt to provide a thrust reaction member for the person when forcing on the cranks (10).

Description

CROSS REFERENCE TO RELATED APPLICATION
The present application is the national stage under 35 U.S.C. 371 of PCT/IT99/00189, filed Jun. 22, 1999.
DESCRIPTION
The present invention relates to a human propulsion vehicle with at least two wheels, as a bicycle, tricycle or the like.
Human propulsion vehicles as bicycles or the like are already known in the art, characterised in that they comprise a pedal drive system in which the energy from the legs is converted from a reciprocating into a circular motion by a so-called wheel and crank system.
Such wheel and crank system has a drawback in that, due to constructive and functional reasons, the crank is of a moderate size, i.e. during the reciprocating motion it has a reduced length equalling the leg swing. This entails a small torque value that can be driven to the wheel or crown.
Moreover, there is a further drawback due to the fact that the person assumes a posture that is such as to be able to exert on the pedals a force not greater than the weight thereof, thus entailing a reduced value of the torque to drive the wheel or crown.
Therefore, object of the present invention is that of solving the drawbacks of the state of the art by providing a human propulsion vehicle with at least two wheels having a crank-wheel drive system suitable for converting the driving torque into higher values, so as to ensure higher values for the driving torque and reduced stress for the person with respect to the state of the art.
Another object of the present invention is to provide a human propulsion vehicle with at least two wheels whith a high efficiency crank-wheel driving system, of easy realisation, sturdy and, last but not least, of low cost.
Therefore, the present invention provides a human propulsion vehicle with at least two wheels comprising a first frame, an handlebars rotatably mounted onto the first frame and connected with at least one wheel, a second frame integrally connected to the first frame at the front portion thereof and above to said handlebars, and resting means for the person,
the vehicle being characterised in that it further comprises first driving means suitable for realizing a swinging reciprocating motion around an axis of rotation and second driving means apted to convert the swinging reciprocating motion of said first driving means in a rotary motion around said axis of rotation, said first means and said second means being rotatably mounted onto said second frame.
A detailed description of a preferred embodiment of the present invention will be disclosed hereinafter, given, by way of example and not for limitative purposes, making reference to the annexed drawings, wherein:
FIG. 1 is a perspective view of the vehicle of the present invention; and
FIG. 2 is an elevational side view of the vehicle of the present invention.
With reference now to FIGS. 1 and 2, the vehicle of the present invention comprises a frame 1 to which a front fork 2 is hinged, the latter is rotatably connected to a front wheel 3 and connected at the upper end thereof to an handlebars 4 in the already known manner. Likewise, a rear wheel 5 is rotatably connected to the frame 1 in the already known manner is provided.
At the central backward portion of the frame 1 a seat 6 for the resting of the person on the frame 1 is provided. Moreover, a seat back 7 for the resting of the back region of the person is provided.
At the front region of the frame 1, in an upper position and above the handlebars 4, a second frame 8 is provided integrally connected to the first frame 1. The second frame 8 has, at the upper end thereof, a crown 9 rotatably mounted onto the frame 8. The crown 9 is in turn coaxially connected with a pair of cranks 10, one on each side of the crown 9. It is to be noted that the cranks 10 are remarkably longer than those of the state of the are.
The connection of the cranks 10 with the crown 9 is of the freewheel or sprocket wheel type, so as to make the cranks 10 capable of performing a swinging reciprocating motion around the axis of rotation (100) of the crown 9, and driving the torque to the crown 9 only in a direction of rotation thereof, and being freely rotatable in the opposite direction of rotation.
On the other hand, the crown 9 is connected with a chain or the like to a second crown 11 rotatably and centrally mounted onto the frame 1 at the lower part therof. The crown 11 is in turn connected to the hub of the wheel 5 with a chain or the like in the already known manner.
In the connection between crown 9 and crown 11, a torque conversion by a suitable reduction gear can be provided.
A first advantage of the invention is that the combination of the members of the invention is such that to drive the rear wheel 5 with a driving torque that is markedly higher than the state of the art, thus remarkably decreasing the stress of the person at same driving energy. In fact, at the same stress of the person, a torque which is remarkably higher than that of the state of the art is applied to the crown 9 by choosing a suitably length of the cranks 10.
Another advantage of the present invention derives from the fact that the person, once seated, can exert on the cranks 10 a thrust with his legs that is higher than the weight thereof, due to fact that the person when resting the back region thereof onto the seat back 7, the latter provides a reaction member to the leg thrust.
A further advantage of the present invention derives from the fact that, when seated, the person has a lesser wind resistance than that of the similar vehicles of the state of the art.
To the persons skilled in the art it will be apparent that the present invention is susceptible of several further modifications and embodiments without departing from the spirit of the invention and from the scope on the annexed claims.

Claims (6)

What is claimed is:
1. A human propulsion vehicle with at least two wheels (3,5) comprising a first frame (1), handlebars (4) rotatably mounted onto the first frame (1) and connected with at least one wheel (3), a second frame (8) integrally connected to the first frame (1) at the front portion thereof and above to said handlebars (4), and resting means (6,7) for the person,
the vehicle being characterised in that it further comprises first driving means (10) suitable for realizing a swinging reciprocating motion around an axis of rotation (100) and second driving means (9) adapted to convert the swinging reciprocating motion of said first driving means (10) in a rotary motion around said axis of rotation (100), said first means (10) and said second means (9) being rotatably mounted onto said second frame (8).
2. The human propulsion vehicle with at least two wheels (3,5) according to claim 1, characterised in that it further comprises third driving means (11) for converting and driving the torque driven from said first driving means (10) to at least one rear wheel (5) of said at least two wheels (3,5).
3. The human propulsion vehicle with at least two wheels (3,5) according to claim 1, wherein said first driving means comprises two cranks (10) connected one facing the other and positioned above said handlebars (4).
4. The human propulsion vehicle with at least two wheels (3,5) according to claim 1, wherein said second driving means comprises a crown (9) rotatably mounted onto said second frame (8) and rotatably connected to said two cranks (10) by means of a freewheel or sprocket device, the arrangement being suitable for converting the swinging motion of the cranks (10) into a one direction rotatory motion of the crown (9) and consequently driving the energy to one wheel (5) of said at least two wheels (3,5) of the vehicle by chain means.
5. The human propulsion vehicle with at least two wheels (3,5) according to claim 1, wherein said third driving means comprises a second crown (11) rotatably mounted at the lower portion of said first frame (1) and connected to said first crown (9) and to said at least one rear wheel (5) of said at least two wheels (3,5) of the vehicle.
6. The human propulsion vehicle with at least two wheels (3,5) according to claim 1, wherein said resting means comprise a seat (6) mounted in a central and lower position onto said first frame (1), and a seat back (7) placed in a backward position onto said first frame (1), the arrangement being such as to make said seat back (7) suitable for providing a thrust reaction member for the person seated therein, and suitable to give the person lesser wind resistance.
US09/485,905 1998-06-22 1999-06-22 Human powered vehicle with at least two wheels Expired - Fee Related US6336646B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT98RM000415A ITRM980415A1 (en) 1998-06-22 1998-06-22 PROPULSION MECHANISM ACTIVATED BY THE MUSCLES OF A PERSON CHARACTERIZED BY VERY LONG CRANKS (LEVERS) APPLICABLE TO
ITRM98A0415 1998-06-22
PCT/IT1999/000180 WO1999067124A1 (en) 1998-06-22 1999-06-22 Human powered vehicle with at least two wheels

Publications (1)

Publication Number Publication Date
US6336646B1 true US6336646B1 (en) 2002-01-08

Family

ID=11406004

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/485,905 Expired - Fee Related US6336646B1 (en) 1998-06-22 1999-06-22 Human powered vehicle with at least two wheels

Country Status (12)

Country Link
US (1) US6336646B1 (en)
EP (1) EP1023218B1 (en)
JP (1) JP2002518253A (en)
KR (1) KR100374294B1 (en)
CN (1) CN1093812C (en)
AT (1) ATE348032T1 (en)
DE (1) DE69934391T2 (en)
DK (1) DK1023218T3 (en)
ES (1) ES2279620T3 (en)
IT (1) ITRM980415A1 (en)
PT (1) PT1023218E (en)
WO (1) WO1999067124A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403698A (en) * 2003-07-05 2005-01-12 Patrick Sebastian Eugene Cruft Human-powered vehicle and carriageway therefor
EP1614616A3 (en) * 2004-07-05 2006-09-06 Patrick Sebastian Eugene Cruft Human-powered vehicles, drive systems and suitable protective tracks
US20070085297A1 (en) * 2005-10-18 2007-04-19 Eugene Cruft Patrick S Human-powered vehicles and carriageways
US20080174086A1 (en) * 2007-01-10 2008-07-24 Brian Roger Clemons Ratchet-action drive mechanism for human power
US20090283206A1 (en) * 2006-08-07 2009-11-19 Sherif Eskaros Non-shortening wrapped balloon
US20100049123A1 (en) * 2006-08-07 2010-02-25 Alpini Alfred A Catheter balloons with integrated non-distensible seals
US8702115B2 (en) 2010-09-14 2014-04-22 Radu Kramer Drive mechanism and bicycle drive system
US9115785B1 (en) 2012-11-27 2015-08-25 Radu Kramer Compact drive mechanism with selective reverse power output
US10858065B1 (en) * 2019-07-26 2020-12-08 Cyclazoom Llc Linearly actuated vehicle
US11286018B1 (en) 2019-07-26 2022-03-29 Cyclazoom, LLC Linearly actuated vehicle providing increased force actuation
US11312448B1 (en) 2019-07-26 2022-04-26 Cyclazoom, LLC Bicycle with force-increasing actuation system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063599A1 (en) * 2010-12-20 2012-06-21 Jörg Nauerz bicycle
DE102017008328A1 (en) 2017-09-05 2019-03-07 Vladimir Schindler Pendulum lever drive for muscle-driven means of locomotion

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US465140A (en) * 1891-12-15 mccammon
US2184244A (en) * 1938-08-30 1939-12-19 Paul F Meyer Bicycle
US4717164A (en) * 1986-05-27 1988-01-05 Shmuel Levavi Road vehicle including banking, steering, braking and other controls
US5242181A (en) * 1989-03-13 1993-09-07 Fales H Russell Human powered vehicle with improved drive system
US5263732A (en) * 1991-12-06 1993-11-23 Harmeyer Jerome E Three wheel recumbent vehicle
US5272928A (en) * 1989-02-23 1993-12-28 Young Douglas M Apparatus for the transmission of power to a rotating member
US5290054A (en) * 1992-10-14 1994-03-01 Chungchiao J Linear drive recumbent cycle
EP0765799A1 (en) * 1995-09-29 1997-04-02 Paolo Cencigh Four-wheel pedal vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990000933U (en) * 1997-06-13 1999-01-15 이경수 Bicycle auxiliary drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US465140A (en) * 1891-12-15 mccammon
US2184244A (en) * 1938-08-30 1939-12-19 Paul F Meyer Bicycle
US4717164A (en) * 1986-05-27 1988-01-05 Shmuel Levavi Road vehicle including banking, steering, braking and other controls
US5272928A (en) * 1989-02-23 1993-12-28 Young Douglas M Apparatus for the transmission of power to a rotating member
US5242181A (en) * 1989-03-13 1993-09-07 Fales H Russell Human powered vehicle with improved drive system
US5263732A (en) * 1991-12-06 1993-11-23 Harmeyer Jerome E Three wheel recumbent vehicle
US5290054A (en) * 1992-10-14 1994-03-01 Chungchiao J Linear drive recumbent cycle
EP0765799A1 (en) * 1995-09-29 1997-04-02 Paolo Cencigh Four-wheel pedal vehicle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403698A (en) * 2003-07-05 2005-01-12 Patrick Sebastian Eugene Cruft Human-powered vehicle and carriageway therefor
GB2403698B (en) * 2003-07-05 2005-11-09 Patrick Sebastian Eugene Cruft Human-powered vehicles and carriageways
EP1614616A3 (en) * 2004-07-05 2006-09-06 Patrick Sebastian Eugene Cruft Human-powered vehicles, drive systems and suitable protective tracks
US20070085297A1 (en) * 2005-10-18 2007-04-19 Eugene Cruft Patrick S Human-powered vehicles and carriageways
US20100049123A1 (en) * 2006-08-07 2010-02-25 Alpini Alfred A Catheter balloons with integrated non-distensible seals
US20090283206A1 (en) * 2006-08-07 2009-11-19 Sherif Eskaros Non-shortening wrapped balloon
US20080174086A1 (en) * 2007-01-10 2008-07-24 Brian Roger Clemons Ratchet-action drive mechanism for human power
US7717448B2 (en) * 2007-01-10 2010-05-18 Brian Roger Clemons Ratchet-action drive mechanism for human power
US8702115B2 (en) 2010-09-14 2014-04-22 Radu Kramer Drive mechanism and bicycle drive system
US9115785B1 (en) 2012-11-27 2015-08-25 Radu Kramer Compact drive mechanism with selective reverse power output
US10858065B1 (en) * 2019-07-26 2020-12-08 Cyclazoom Llc Linearly actuated vehicle
US11286018B1 (en) 2019-07-26 2022-03-29 Cyclazoom, LLC Linearly actuated vehicle providing increased force actuation
US11312448B1 (en) 2019-07-26 2022-04-26 Cyclazoom, LLC Bicycle with force-increasing actuation system
US11440615B2 (en) 2019-07-26 2022-09-13 Cyclazoom, LLC Linearly actuated vehicle with coiling power link

Also Published As

Publication number Publication date
ES2279620T3 (en) 2007-08-16
EP1023218A1 (en) 2000-08-02
DK1023218T3 (en) 2007-03-19
KR20010023146A (en) 2001-03-26
DE69934391T2 (en) 2007-11-29
PT1023218E (en) 2007-03-30
EP1023218B1 (en) 2006-12-13
CN1272823A (en) 2000-11-08
CN1093812C (en) 2002-11-06
ITRM980415A1 (en) 1999-12-22
JP2002518253A (en) 2002-06-25
ATE348032T1 (en) 2007-01-15
DE69934391D1 (en) 2007-01-25
WO1999067124A1 (en) 1999-12-29
KR100374294B1 (en) 2003-03-03
ITRM980415A0 (en) 1998-06-22

Similar Documents

Publication Publication Date Title
US6336646B1 (en) Human powered vehicle with at least two wheels
US9114848B2 (en) Pedal-drive system for manually propelling multi-wheeled cycles
US5192089A (en) Pedal-operated scooter
US5419572A (en) Reciprocating bicycle drive
US20070228687A1 (en) Bicycle propulsion mechanism
EP1165364B1 (en) Improved bicycle crank system
US20080106061A1 (en) Drive apparatus
US8632089B1 (en) Mechanism for converting reciprocal motion to rotary motion
US7669869B2 (en) Drive apparatus
US20080271551A1 (en) Drive Apparatus
US4479659A (en) Cycle
US4664400A (en) See saw exercise vehicle
FR2805795A3 (en) Exercise tricycle has the rear wheels powered by foot pedals with separate linkages
RU2137656C1 (en) Bicycle
US20030181292A1 (en) Exercising bicycle
US20040150185A1 (en) Front wheel drive handlebar for use with bicycles
US5042828A (en) Bicycle
CN2306167Y (en) Walking bicycle
AU2006246539B2 (en) Levercycle
CN2530869Y (en) Front driving bicycle capable of parallel moving handlebar
CN2547628Y (en) Backward pedal bicycle
CN2181460Y (en) Rear wheel core gear transmission type bicycle for two people
RU2000107146A (en) POWERED BY HUMAN MUSCLE POWER VEHICLE NOT LESS THAN TWO WHEELS
BE470793A (en)
CA2035699A1 (en) Bicycle kit

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

FEPP Fee payment procedure

Free format text: PAT HOLDER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO SMALL (ORIGINAL EVENT CODE: LTOS); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20140108